REDUCING PACKET LOSS WITH PROTECTION TUNNEL BASED REROUTING  

作　　者：Ma Hailong Guo Yunfei Cheng Dongnian 

机构地区：[1]National Digital Switching System Engineering and Technology Research Center, Zhengzhou 450002, China

出　　处：《Journal of Electronics(China)》2011年第3期359-369,共11页电子科学学刊（英文版）

基　　金：Supported by the Major State Basic Research Development Program(No.2007CB307102);the State High Technology Research Development Program(No.2009AA01A346)

摘　　要：It is well-known that today's inter-domain routing protocol, Border Gateway Protocol (BGP), converges slowly during network failures. During the convergence period, widespread tempo-rary burst packet loss happens that may be caused by route loops or blackholes. In this paper, we present a Protection Tunnel based Rerouting (PTR) mechanism-a novel scheme for delivering packet continuously during period of convergence. PTR scheme pre-establishes protection tunnel among routers. Once the inter-domain link failed, routers could redirect those influenced packets along pro-tection tunnel to a router that has a valid path to destination. Therefore, packets could be forwarded continuously even encountering fault links. The performances of PTR scheme are simulated. The results demonstrate that PTR scheme is more resilient to link failures than BGP. The cost caused by PTR scheme is very little and acceptable.It is well-known that today＇s inter-domain routing protocol, Border Gateway Protocol （BGP）, converges slowly during network failures. During the convergence period, widespread tempo-rary burst packet loss happens that may be caused by route loops or blackholes. In this paper, we present a Protection Tunnel based Rerouting （PTR） mechanism-a novel scheme for delivering packet continuously during period of convergence. PTR scheme pre-establishes protection tunnel among routers. Once the inter-domain link failed, routers could redirect those influenced packets along pro-tection tunnel to a router that has a valid path to destination. Therefore, packets could be forwarded continuously even encountering fault links. The performances of PTR scheme are simulated. The results demonstrate that PTR scheme is more resilient to link failures than BGP. The cost caused by PTR scheme is very little and acceptable.

关 键 词：TUNNEL Deflection route REROUTE 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]